| undiscriminating(adjective, extensive, chaotic, random, haphazard) |
| unexpected(careless, casual, arbitrary) |
| unhelpful(adjective, awkward, insignificant, irregular, useless) |
| unmethodical(adjective, careless, casual, unreliable, extensive) |
| unnecessary(irregular, wanton, vacuous) |
| unorganized(careless, casual, arbitrary) |
| unpremeditated(careless, chance, casual, haphazard, arbitrary) |
| unprofitable(adjective, insignificant, irregular, useless, empty) |
| unpunctual(erratic, random, haphazard) |
| unpurposed(adjective, awkward, insignificant, irregular, useless) |
| unselective(adjective, extensive, chaotic, messy, random) |
| unsettled(erratic, random, haphazard) |
| unsteady(erratic, random, haphazard) |
| unsystematic(adjective, careless, casual, unreliable, uneven) |
| unthinking(careless, casual, arbitrary) |
| up and down(expression, idiom, erratic, random, haphazard) |
| vacuous(adjective, insignificant, irregular, useless, empty) |
| varied(adjective, extensive, chaotic, random, haphazard) |
| variegated(adjective, extensive, chaotic, random, haphazard) |
| wanton(adjective, insignificant, irregular, useless, empty) |